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Chillers

Q1: The chiller is generally the most expensive piece of equipment in the HVAC system.

true

false

Q2: Maintenance staff should never perform any operation that involves opening or repairing leaks in a sealed system containing refrigerant.

true

false

Q3: Chilled water systems are filled with clean water and therefore do not need water testing.

true

false

Q4: The cost of a central system is justified in a larger building and the efficiency of modern central chiller systems is much higher than the rooftop arrangements typically used in smaller buildings.

true

false

Q5: Should the pressure drop in the water flow through either the condenser or evaporator climb significantly during the cooling season, there is some type of restriction occurring within the tubes.

true

false

Q6: The oil temperature is a good indicator of the operating temperature of the motor and compressor. A significant rise in oil temperature can indicates trouble within the motor or compressor.

true

false

Q7: If the chilled water system is filled with demineralized water, the water cannot harm the piping system.

true

false

Q8: In a chilled water system, steel piping will rust but copper piping cannot be damaged by the chilled water.

true

false

Q9: The most critical part of a chiller to insulate is the evaporator. Therefore, the insulation on the evaporator should be checked regularly.

true

false

Q10: Chilled water piping should always be insulated to keep the chilled water cold until it reaches the cooling coils and to keep humidity from condensing on the chilled water piping and dripping down into occupied spaces.